Technicians facilitate the transfer the STS-106 payload to Atlantis on Launch Pad 39-B using
the Payload Ground Handling Mechanism (PGHM). The circular structure shown is the docking
adapter. The PGHM (pronounced pigem) is located inside the Payload Changeout Room (PCR) of
each shuttle launch padís Rotating Service Structure. The PGHM removes payloads from a
transportation canister and installs them into the orbiter. It is essentially NASAís largest
fork-lift.
(Photo Release Date: 08/16/2000
)

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